#!/usr/bin/env python
# coding=utf-8
import pretty_errors
import pygame.font


class Button():
    def __init__(self, ai_settings, screen, msg):
        '''初始化按钮的属性'''
        self.screen = screen
        self.screen_rect = screen.get_rect()

        # 设置按钮的尺寸和其他属性
        self.width, self.height = 200, 50
        self.button_color = (0, 255, 0)
        self.text_color=(255,255,255)
        self.font = pygame.font.SysFont(None, 48)

        # 创建按钮的rect对象,并居中
        self.rect = pygame.Rect(0, 0, self.width, self.height)
        self.rect.center = self.screen_rect.center

        # 按钮的标签只创建一次
        self.prep_msg(msg)


    def prep_msg(self, msg):
        '''将msg渲染为图像,并在按钮上局中'''
        self.msg_image = self.font.render(msg, True, self.text_color,
                                          self.button_color)
        self.msg_image_rect = self.msg_image.get_rect()
        self.msg_image_rect.center = self.rect.center


    def draw_button(self):
        # 绘制按钮和文本
        self.screen.fill(self.button_color, self.rect)
        self.screen.blit(self.msg_image, self.msg_image_rect)
